According to Qiao Wei's request, Zhu Zhi rectified the original Sijin Field in Wu County, and divided the nearby wasteland into it, fortunately, it was originally located in the wasteland far away from the people, otherwise it would be really difficult to do, but the number of craftsmen in the Sijin Field was only more than 30, plus the craftsmen brought back from Guangling County, it added up to more than 60.

Qiao Wei counted the manpower, and then asked Zhu Zhi to find out the most experienced craftsmen in the field, and each person was given a few drawings of the workpiece, and then asked them to make the workpiece mold according to the drawings.

If you want to standardize production, molds are indispensable.

One of the old men just glanced at the drawings and then asked his own question, "These workpieces drawn by Madame are extremely difficult to make, and the smaller the parts required for the workpiece, you must not only use iron, but must use 100 steels. ”

Qiao Wei nodded, "The old gentleman is an expert, and he can see the way at a glance." Because the workpiece is small and delicate, the force to be borne after completion is at least ten stones, which cannot be done without 100 steel. ”

Qiao Wei also carefully observed the situation of the soldiers during training when he was in the barracks, and found that due to the effect of the lever principle, although the force used by the soldiers was somewhat reduced, if the arrow was to send out the same distance, the final force needed to act on the mechanism, and if the hardness of the mechanism was not enough, the frequency of loss and destruction would increase.

100 Steel is a good choice.

Since the middle of the Western Han Dynasty, the frying method has gradually become the mainstream of steelmaking, with high production efficiency and good yield.

The refined iron is heated and forged more than 100 times, one forging, one weighing and one light, until the catties are not reduced, that is, hundreds of steel. This should be the best hardness and quality material that can be achieved at the moment.

The clever crossbows cast by the Mojia Iron Shop are all made of 100 steel.

"But the stock of 100 steels in the field is not enough, and if Madam and Du Wei want to build 500 bows and crossbows, it may not be enough."

Qiao Wei took out part of the drawings and pointed to the part marked with fine characters on it, "These are the ones that need to be forged with 100 steels, and the other parts are made of pig iron." ”

This splicing method is also commonly used by Qiao Wei, each workpiece has different forces to bear, and the role is also different, and it is not necessary to forge the same material.

Part of the shell can also be completely replaced with wood, which can reduce part of the weight, while ensuring the range and durability, reduce the burden of the soldier, and can prolong the durability of the soldier's battle.

"Well, it may not be possible."

Qiao Wei had no choice but to ask, "Then how long can the iron and steel that are in the field last for a long time?" ”

"Today, the reserves in the field are less than 20 stone of pig iron, and less than half of 100 steel."

One stone in the Eastern Han Dynasty is equivalent to 29.76 kilograms, which is indeed not much, and the sum of pig iron and 100 steels is not even a ton.

Even if it is about 4 kilograms according to modern standards, and it is made of wood, bamboo and other materials, it can only make less than 300 sets of workpieces at most.

Qiao Wei couldn't help but be a little puzzled, and asked Zhu Zhi, "Why is there no material reserve in the venue?" ”

It stands to reason that Wu County's Si Jin Field should be regarded as a relatively large-scale weapon reserve of the Jiangdong Army.

Zhu Zhi smiled bitterly, "Because there is no iron ore that can be mined in Jiangdong." ”

Qiao Wei suddenly remembered that the iron ore mining technology in the Han Dynasty was limited, and the mainstream of iron smelting technology was mainly concentrated in Wudu, namely Handan, Nanyang, Shujun, Luoyang, and Linzi.

Among them, Handan's iron ore is the most abundant, and Nanyang is a technological stream, but no matter which one is related to Jiangdong.

Because the iron-smelting industry is concentrated in Wudu, the corresponding iron-smelting industry is the most developed and the most skilled talents will also be concentrated in Wudu.

What a desperate truth. No wonder the two brothers Sun Ce and Sun Quan are so persistent in seizing the opponent's weapon every time they win a battle, and their feelings are because the reserve is really scarce, and it is their own to grab one more piece of equipment.

Qiao Wei thought for a while and gave an answer, "Regardless of whether the iron stone is enough in the end, first do what can be done in the Sijin Field." ”

Workers, workers, workers, workers are responsible for burning their souls in heaven and earth.

The instructions issued by the boss above, there are conditions to be on, there are no conditions, and the conditions must be created. Under limited conditions, even if you can't do anything, you can't do nothing.

She gave Zhu Zhi a thick stack of program plans, which were really handwritten manuscripts, which she had been thinking about when she was in the barracks.

"According to the time required for the process and the difficulty of the process, a group of three to ten people can complete a process, and an experienced craftsman is responsible for quality inspection."

Zhu Zhi flipped through the thick stack of yellow paper, whispered the words on the paper, and then asked curiously, "What is quality inspection?" ”

"Quality Management & Inspection." Qiao Wei very officially adopted the Chinese dictionary interpretation, and then added his own explanation, "It is to check whether it is consistent with the requirements of mold forming and the measurement of drawings." ”

"By the way, please familiarize yourself with all the contents of this booklet within three days, and then teach it to Si Jincheng in Si Jin Field, and then organize and arrange to promote the trial work in Si Jin Field."

Zhu Zhi looked at such a thick yellow paper, and couldn't help but widen his eyes, "Madame is talking ......"

"Yes, if Lord Lieutenant thinks that time is too much, then it will be two days' work......"

"Huh?"

Zhu Zhi was blindsided by Qiao Wei's style of doing things, "My subordinates don't mean that." ”

Sun Ce and Sun Quan both wrote back, asking Zhu Zhi to fully assist Qiao Wei in rectifying the matter of Si Jinchang, otherwise with Zhu Zhi's personality, he would have jumped out to question it a long time ago.

"The subordinates just don't know what the lady has in mind, and the subordinates can help arrange it."

Qiao Wei said, "When you open the thirty-fifth page of the manual, you must first engrave the mold, and the drawings of the mold have been distributed to the leaders of those craftsmen in Fangcai, and the requirements have been written, and the tolerance is not more than one-tenth of an inch. ”

That's 3 mm.

"Secondly, it is grouped according to the process, each group is responsible for the continuous casting of a process, forging tube forging, molten iron tube melting, pouring pipe pouring, each performing its own duties, without interfering with each other."

"In the end, it is necessary to set up quality inspection, sampling inspection and sit in accordance with the responsibility system, whose process does not meet the requirements, and the whole group will rework."

Qiao Wei also pointed out the most important task at present, "Looking for iron ore, you can also purchase pig iron or iron stone in large quantities." ”

Zhu Zhi thought to himself, the others are okay, but this iron mine is afraid that it is difficult to find, and now all the mines in the imperial court have also been taken over by the princes and powerful people from all walks of life, where can they get their turn!

Qiao Wei said, "Actually, there are two ways in my heart. ”